Method for realizing interference resistance of on-vehicle radio set

Abstract

The invention discloses a method for realizing interference resistance of an on-vehicle radio set. The method comprises the steps of automatically searching radio stations by the radio set, receiving a frequency point signal which satisfies a radio station searching stopping condition, and neglecting the channel point signal without tuning; by means of a frequency spectrum sensing method for sensing radio energy detection, performing periodical sensing detection on all frequency bands which are supported by the system, and obtaining the energy characteristic of each frequency band; detecting whether a frequency spectrum window exists according to an interference temperature condition in the channel, and generating the quality characteristic of each frequency spectrum window according to a corresponding criterion. According to the method of the invention, after the radio set automatically receives the frequency point signal, the frequency of the frequency point signal is matched with information in a data sheet for determining whether the frequency point signal is a prestored radio station signal; and if not, the frequency point signal is marked as an interference signal and no tuning is performed. Compared with the prior art, the method has advantages of effectively eliminating interference signals, preventing mis-marking of the interference signal as an effective radio station signal, and increasing listening efficiency of the radio set.

Description

technical field [0001] The invention relates to an anti-jamming method, in particular to a method for realizing anti-jamming of a car radio. Background technique [0002] At present, radios have been widely used in people's lives, especially with the development of the mobile Internet, most of the current radios are used in cars, and the usual radios have the function of automatic station search. For example, for radios based on LC-type oscillating circuits, tuning is mostly carried out with variable capacitors, while the popular method for digital tuning radios is frequency synthesis. Automatic station search, starting from the low end of the frequency, when the radio finds a station, it will accurately tune and record the frequency data, and then continue to search for stations to the high end of the frequency (for example, it can be controlled by buttons or automatically search to the high end of the frequency) . [0003] The inventor found in the research that during t...

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Problems solved by technology

[0003] The inventor found in the research that during the use of the automatic station search, the radio often encounters strong interference signals, especially the car radio, which will encounter various terrains and environments during driving. Misrecording the interference signal as a valid station is not conducive to the effective listening of the user and reduces the listening efficiency